CN106893961A - A kind of supersonic flame spraying method for strengthening turbine blade surface - Google Patents
A kind of supersonic flame spraying method for strengthening turbine blade surface Download PDFInfo
- Publication number
- CN106893961A CN106893961A CN201710017228.5A CN201710017228A CN106893961A CN 106893961 A CN106893961 A CN 106893961A CN 201710017228 A CN201710017228 A CN 201710017228A CN 106893961 A CN106893961 A CN 106893961A
- Authority
- CN
- China
- Prior art keywords
- turbine blade
- blade surface
- supersonic
- spraying method
- strengthening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The present invention relates to a kind of supersonic flame spraying method for strengthening turbine blade surface.The present invention is dried to turbine blade, sandblasting roughening treatment is carried out to sprayed surface with Brown Alundum, take cemented carbide powder and be put in 100 DEG C of baking ovens that to dry 2h standby, sprayed surface is treated with supersonic spray gun to be preheated, using supersonic velocity flame plating equipment directly in the preheated anti-corrosion hard alloy coating of blade surface spraying abrasion-proof, coating layer thickness can several times implement spraying and obtain according to demand, and cemented carbide powder powder material includes the WC Co cemented carbide powders of different Co contents.Instant invention overcomes the defect of various spraying methods.The present invention significantly increases the intensity hardness and anti-erosion performance of blade surface, complex process post processing need not be carried out just can come into operation, the production cycle is substantially reduced, production cost is reduced, coat inside porosity is extremely low and high with turbine blade substrate combinating strength.
Description
Technical field
It is more particularly to a kind of strong the present invention relates to engineering and material science and surface-coating technology, wear-resisting erosion resistance coating
Change the supersonic flame spraying method on turbine blade surface.
Background technology
The whole world is more and more deep for the exploitation of water energy for a long time, it was reported that current China's water generating total installed capacity holds
Amount breaks through 300,000,000 KW, accounts for the 1/4 of global total installed capacity of hydropower total amount.The abrasion of water turbine overflowing component seriously causes hydroelectric generation to set
It is standby to need frequent Replacement and Repair, substantial amounts of manpower and materials are not only wasted, have an effect on the economic benefit in power station.Therefore, water is solved
Especially turbine blade erosion problem is very urgent for turbine flow passage components.
The hydraulic turbine plays an important roll as dynamic power machine in water generating, but environment is complicated in river, exists big
The silt and electrolyte of amount, wherein turbine blade are most also easy to produce wear phenomena.Blade is immersed in the current of rotation at a high speed for a long time
In, not only impacted by high-velocity flow, cavitated and mechanical force, while being also subject to the medium such as silt for being mingled with current
Friction shear action, serious threat is caused to turbine blade.Erosive wear, ablation destruction, cavitation corrosion and spot corrosion are the hydraulic turbines
The main damage form of blade.
Before the present invention is proposed, the effective ways that China takes in terms of turbine blade surfacecti proteon have plating, swash
Optical surface quenching, oxy-acetylene flame spraying wear-resistant coating combination remelting processing, electric spark deposition nanometer WC combine welding enhancing, etc.
Ion cladding antiwear heat resisting coating etc..But these methods often come with some shortcomings, such as pollution environment, complex process, equipment are held high
The expensive, production cycle is long, cost is high etc., is not suitable for the reinforcing of extensive turbine blade and repairs, therefore it is a kind of raw to be badly in need of exploitation
Produce the method for efficiency high and simple possible to increase the wear resistance and corrosion resistance of turbine blade, extend its service life.
HVAF (HVOF) is in specific combustion chamber after mixing gaseous state or liquid fuel with high pressure oxygen
Or burnt in nozzle, burning flame flow velocity degree can reach more than five Mach (1500m/s), and the powder particle of thawing is in burned flame
In can be accelerated to 300-600m/s, even more high.HVAF particle temperature is low, flying speed fast, therefore
The bond strength of the coating for arriving is high, porosity is lower, and having in terms of turbine blade surface abrasion resistance anti-corrosion coating is prepared can not
The advantage of replacement.
CN102506002A is related to a kind of cavitation turbine blade and oxygen-acetylene flame sprayed coating combination remelting to post-process
Method, the method for turbine blade under the percussion that bubble is crumbled and fall easily occur elastic deformation and plastic deformation, such as
This causes blade surface that crackle occurs repeatedly, the phenomenon of rotary wheel of water turbine must not be finally changed without, using flame spraying process
In turbine blade surface spraying Ni60+20%WC coatings, make turbine blade surface that there is cavitation ability high, coating and base
The bond strength of body is high, can effectively solve current turbine blade cavitation.
CN105695987A invents a kind of metal hydroturbine runner electric spark on surface deposition nanometer tungsten carbide intensifying method, should
Invention removed the greasy dirt and oxide of turbine runner blade before this, and WC-Co manocrystalline powders are mixed with polyvinyl alcohol then
It is prefabricated in blade surface to be deposited into pasty state, using electric spark deposition built-up welder using sub-micron WC-Co ceramals rod as sun
Pole, under Ar protections, with the turbine blade of deposited powder as negative electrode, by sub-micron WC-Co ceramic hards alloy bar,
WC-Co hard alloy manocrystalline powders and turbine blade are fused together, cooled and solidified.Turbine blade prepared by the invention
Hardness superelevation, compactness is high, and wearability is good, long lifespan.
The content of the invention
The purpose of the present invention is that and overcomes drawbacks described above, develops a kind of supersonic flame for strengthening turbine blade surface
Spraying method.
The technical solution adopted by the present invention is：
A kind of supersonic flame spraying method for strengthening turbine blade surface, it is mainly characterized by, comprising with
Lower step：
(1) greasy dirt, rust stain and oxide process and drying are removed with organic solvent to turbine blade；
(2) sandblasting roughening treatment is carried out to sprayed surface with Brown Alundum；
(3) cemented carbide powder for weighing 180~300 mesh is put in 100 DEG C of baking ovens that to dry 2h standby；
(4) walked one time in turbine blade surface sky with supersonic spray gun, treat sprayed surface and preheated；
(5) directly applied in the preheated anti-corrosion hard alloy of blade surface spraying abrasion-proof using supersonic velocity flame plating equipment
Layer；
(6) coating layer thickness can several times implement spraying acquisition according to demand；
(7) cemented carbide powder powder material includes the WC-Co hard alloy powder of different Co contents.
Roughness requirements are not less than Ra 7.0~9.0 after the step (2) blasting treatment.
Step (4) preheating temperature is 100~300 DEG C.
Step (5) the Flame temperature is 2500~3500 DEG C, and particle rapidity is 300~800m/s.
Step (6) coating thickness is 100~500 μm.
The mass percent of WC-Co hard alloy powder Co is 3~17% in the step (7), and addition can be mutually Fe
The metal materials such as base, Ni bases, Cr bases.
Advantages of the present invention and effect are：
First, this patent proposes to prepare wear-and corrosion-resistant on turbine blade surface using a kind of HVAF technology
The method of hard alloy coating, significantly increases the intensity hardness and anti-erosion performance of blade surface.
Second, supersonic flame heat spraying method proposed by the present invention has that spraying particle temperature is low, and flying speed is fast
Feature, the decarburization in flame stream of WC-Co particles is effectively reduced in spraying process and is decomposed, and coat inside porosity is extremely low and and water wheels
Machine blade base bond strength is high, just can be come into operation without carrying out complex process post processing, substantially reduces the production cycle, drops
Low production cost.The method is easy to automate and continuous productive process, meets the production theory of environmental protection, with extensive
Market application foreground and economic benefit.
Compared to the oxygen-acetylene flame sprayed coating combination remelting hardening turbine blade used in patent CN102506002A
Method, this patent is small to matrix effect, will not deform matrix, without the remelting post-processing step needed for CN102506002A,
Therefore there is process is simple, the features such as reliability is high.
Compared to patent CN105695987A, the technology of preparing operation that this patent is used is simpler, and production efficiency is higher,
Coating has the characteristics of deposition efficiency is high, coating porosity is low, while compared to the sub-micron used in CN105695987A
WC-Co ceramic hards alloy bar and nanocrystalline WC-Co hard powder, the powder selected by this patent is micron-sized, thus
Cost is lower.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Brief description of the drawings
Fig. 1 --- Velocity Oxygen Flame Sprayed Coatings formation basic theory schematic diagram of the present invention.
Label represents that corresponding component title is as follows in figure：
Supersonic spray gun 1, fuel mixing chamber 2, flame stream 3, powder feeding pipe 4, melt granules 5, turbine blade 6, spraying
Coating 7.
The XRD spectrum schematic diagram of WC-12Co powder raw materials and HVOF coatings in Fig. 2 --- the embodiment of the present invention 1.
WC-12Co coating cross sections optical microphotograph schematic diagrames in Fig. 3 --- the embodiment of the present invention 1.
Specific embodiment
Technical thought of the invention is：
The present invention provides a kind of supersonic flame spraying method for strengthening turbine blade surface, is sprayed by supersonic flame
Hard alloy coating is applied, low production efficiency, processing technology are complicated in solution existing method, anchoring strength of coating is low, dirty to environment
The problems such as contaminating serious, obtains with bond strength is high, hardness is high, the turbine blade face coat of erosion resistant, Anti-erosion, and then
Improve exerting oneself and operational efficiency for the hydraulic turbine.
With reference to specific embodiment, the invention will be further described, it is clear that the only exemplary theory of described embodiment
Bright principle of the invention and effect, not for the limitation present invention.Based on embodiments of the invention, the general of the art is familiar with
All equivalent modifications or change that logical technical staff completes under the premise of creative work is not made, belong to protection of the present invention
Scope.
Powder stock, instrument, equipment required for the present invention etc. are commercially available or are obtained by conventional method.
Velocity Oxygen Flame Sprayed Coatings formation basic theory figure of the present invention is as shown in Figure 1：
The inside of supersonic spray gun 1 includes fuel mixing chamber 2, flame stream 3, powder feeding pipe 4 and partial melt granules
5, wherein fuel mixing chamber 2 is connected to the afterbody of supersonic spray gun 1, in fuel mixing chamber after well mixed ignited fuel
2 the right forms flame stream 3, and powder feeding pipe 4 is connected to the centre position of supersonic spray gun 1, above flame stream 3, water wheels
Machine blade 6 is located at the front of supersonic spray gun 1, and supersonic spray gun 1 sprays melt granules 5 to turbine blade 6
Surface, formed spray-on coating 7.
Application process brief description of the present invention：
Supersonic spray gun 1 is fixed using manipulator and the movement of supersonic spray gun 1 is controlled, oxygen and kerosene exist
It is well mixed in fuel mixing chamber 2, flame stream 3 is formed after lighting, the cemented carbide powder of spraying sends into flame stream 3 by powder feeding pipe 4
Center and heated thawing form melt granules 5, and it is heavy that melt granules 5 accelerate by flame stream 3 speed itself and compressed air
Product is formed to the surface of turbine blade 6 and uniformly sprays coating 7.
All process steps of the invention and details are illustrated by embodiment below.
Embodiment 1：
1. turbine blade surface is cleaned with acetone to go to degrease, stain of becoming rusty and impurity, dried after the completion of cleaning
It is standby.
2. the Brown Alundum from the mesh of granularity 20 carries out sandblasting roughening treatment to the turbine blade after cleaning, it is desirable to after roughening
Surface roughness is Ra7.0~9.0.
3. WC-12Co powder of the 3000g particle size ranges in 180~300 mesh is weighed, and baking 2h is to protect in being put into 100 DEG C of baking ovens
Demonstrate,prove the mobility of powder.
4. before spraying operation, to improve coating quality and deposition efficiency, using supersonic flame flame stream in pretreatment
Turbine blade surface sky is walked one time, is preheated substrate temperature and is reached 200 DEG C or so.
5. dried powder is put into powder feeder, powder sending quantity is adjusted to 50g/min feeding flame flow centers, supersonic flame spray
During painting, flame generation gas is kerosene and oxygen, adjusts fuel pressure 1.1MPa, oxygen pressure 1.4MPa, compressed air
0.2MPa, spray distance 30mm.Manipulator clamping spray gun is used, spray gun translational speed is 300mm/s, and 3mm is moved down every time, weight
Spray 3 times again, wear-and corrosion-resistant hard alloy coating is obtained in blade surface.
6. the WC-12Co coatings that will be prepared by light microscope OM observe coating and matrix combination situation and
Coating layer thickness, as a result finds that coating layer thickness is about 320 μm, as shown in Figure 2.Coating is good with blade interface cohesion.
7. the WC-12Co coatings that will be prepared pass through X-ray diffraction XRD analysis, as shown in figure 3, in visible diffraction spectrum
Main close with starting powder based on WC phases, this explanation, WC less in HVAF process in which materials component damages
Hardly there is decarburization phenomenon, it was demonstrated that supersonic speed flame stream can effectively suppress the decomposition and oxidation of WC.
8. pair WC-12Co coatings for preparing do vickers hardness test, as a result show coating HV0.1Vickers hardness is reachable
1205, it is 2.8 times of matrix material 16Cr5Ni hardness.
Embodiment 2：
The present embodiment is with the difference of embodiment 1：3000g particle size ranges are weighed in step 3 in 180~300 mesh
WC-17Co powder；In steps of 5, powder sending quantity is controlled to send into flame flow center for 45g/min, during HVAF,
Fuel pressure 1.2MPa, oxygen pressure 1.4MPa, compressed air 0.2MPa, spray distance 35mm；In step 6, coating layer thickness
About 300 μm；In step 8, composite coating HV0.1Hardness number is 1108.
Embodiment 3：
The present embodiment is with the difference of embodiment 1：3000g particle size ranges are weighed in step 3 in 180~300 mesh
WC-10Co5Cr3C2Powder；In steps of 5, powder sending quantity is controlled to send into flame flow center, HVAF mistake for 40g/min
Cheng Zhong, fuel pressure 1.2MPa, oxygen pressure 1.4MPa, compressed air 0.2MPa, spray distance 35mm；In step 6, coating
Thickness is about 280 μm；In step 8, composite coating HV0.1Hardness number is 1183.
Embodiment 4：
The present embodiment is with the difference of embodiment 1：3000g particle size ranges are weighed in step 3 in 180~300 mesh
WC-15Co2Ni powder；In steps of 5, powder sending quantity is controlled to send into flame flow center, HVAF process for 35g/min
In, fuel pressure 1.2MPa, oxygen pressure 1.4MPa, compressed air 0.2MPa, spray distance 35mm；In step 6, thickness is applied
About 270 μm of degree；In step 8, composite coating HV0.1Hardness number is 1026.
Embodiment 5：
The present embodiment is with the difference of embodiment 1：3000g particle size ranges are weighed in step 3 in 180~300 mesh
WC-10Co4Cr powder；In steps of 5, powder sending quantity is controlled to send into flame flow center, HVAF process for 30g/min
In, fuel pressure 1.2MPa, oxygen pressure 1.4MPa, compressed air 0.2MPa, spray distance 35mm；In step 6, thickness is applied
About 250 μm of degree；In step 8, composite coating HV0.1Hardness number is 1120.
Claims (6)
1. a kind of supersonic flame spraying method for strengthening turbine blade surface, it is characterised in that comprise the steps of：
(1) greasy dirt, rust stain and oxide process and drying are removed with organic solvent to turbine blade；
(2) sandblasting roughening treatment is carried out to sprayed surface with Brown Alundum；
(3) cemented carbide powder for weighing 180~300 mesh is put in 100 DEG C of baking ovens that to dry 2h standby；
(4) walked one time in turbine blade surface sky with supersonic spray gun, treat sprayed surface and preheated；
(5) using supersonic velocity flame plating equipment directly in the preheated anti-corrosion hard alloy coating of blade surface spraying abrasion-proof；
(6) coating layer thickness can several times implement spraying acquisition according to demand；
(7) cemented carbide powder powder material includes the WC-Co hard alloy powder of different Co contents.
2. a kind of supersonic flame spraying method for strengthening turbine blade surface according to claim 1, its feature exists
In roughness requirements are not less than Ra 7.0~9.0 after the step (2) blasting treatment.
3. a kind of supersonic flame spraying method for strengthening turbine blade surface according to claim 1, its feature exists
In step (4) preheating temperature is 100~300 DEG C.
4. a kind of supersonic flame spraying method for strengthening turbine blade surface according to claim 1, its feature exists
In step (5) the Flame temperature is 2500~3500 DEG C, and particle rapidity is 300~800m/s.
5. a kind of supersonic flame spraying method for strengthening turbine blade surface according to claim 1, its feature exists
In step (6) coating thickness is 100~500 μm.
6. a kind of supersonic flame spraying method for strengthening turbine blade surface according to claim 1, its feature exists
In the mass percent of WC-Co hard alloy powder Co is 3~17% in the step (7), and addition can be mutually Fe bases, Ni
The metal materials such as base, Cr bases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710017228.5A CN106893961A (en) | 2017-01-05 | 2017-01-05 | A kind of supersonic flame spraying method for strengthening turbine blade surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710017228.5A CN106893961A (en) | 2017-01-05 | 2017-01-05 | A kind of supersonic flame spraying method for strengthening turbine blade surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106893961A true CN106893961A (en) | 2017-06-27 |
Family
ID=59198321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710017228.5A Pending CN106893961A (en) | 2017-01-05 | 2017-01-05 | A kind of supersonic flame spraying method for strengthening turbine blade surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106893961A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107779805A (en) * | 2017-10-22 | 2018-03-09 | 陈海银 | Stabilizing roller surface abrasion resistance, corrosion-resistant finishes preparation method |
| CN109811294A (en) * | 2019-01-30 | 2019-05-28 | 扬州市职业大学(扬州市广播电视大学) | A method of enhancing turbine blade surface with supersonic flame spraying |
| CN110512164A (en) * | 2019-09-06 | 2019-11-29 | 武汉苏伯曼科技有限公司 | Improve the method and mineral fine powder steam dryer of the anti-wear abrasive capacity of thermally conductive coil pipe in mineral fine powder steam dryer |
| CN111530720A (en) * | 2020-04-26 | 2020-08-14 | 马鞍山钢铁股份有限公司 | Technology for processing return fan impeller of chain grate machine |
| CN115261768A (en) * | 2022-08-25 | 2022-11-01 | 甘肃伯骊江3D打印科技有限公司 | Supersonic spraying process for pump body |
| CN116162884A (en) * | 2023-03-09 | 2023-05-26 | 昆明理工大学 | Cavitation erosion resistant composite ceramic coating for water turbine and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925848A (en) * | 2012-11-06 | 2013-02-13 | 华北水利水电学院 | Method for spraying nanometer superhard composite coating through hypersonic flame spraying on surface of water pump impeller |
| CN102925847A (en) * | 2012-11-06 | 2013-02-13 | 华北水利水电学院 | Method for preparing submicron abrasion and corrosion resisting coating of flow passage component of water turbine |
| CN103276341A (en) * | 2013-05-08 | 2013-09-04 | 西安热工研究院有限公司 | Water turbine flow passage component wear-resistant coating spraying method |
-
2017
- 2017-01-05 CN CN201710017228.5A patent/CN106893961A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925848A (en) * | 2012-11-06 | 2013-02-13 | 华北水利水电学院 | Method for spraying nanometer superhard composite coating through hypersonic flame spraying on surface of water pump impeller |
| CN102925847A (en) * | 2012-11-06 | 2013-02-13 | 华北水利水电学院 | Method for preparing submicron abrasion and corrosion resisting coating of flow passage component of water turbine |
| CN103276341A (en) * | 2013-05-08 | 2013-09-04 | 西安热工研究院有限公司 | Water turbine flow passage component wear-resistant coating spraying method |
Non-Patent Citations (6)
| Title |
|---|
| 单忠德等: "《机械装备工业节能减排制造技术》", 30 June 2014, 机械工业出版社 * |
| 张云乾: ""纳米结构WC-12Co超音速火焰喷涂曾制备工艺及抗气蚀性能研究"", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 李勇等: ""水轮机过流部件表面WC-CoCr涂层的失效机理"", 《中国表面工程》 * |
| 杜晋等: ""水轮机金属材料及其涂层抗空蚀和砂浆冲蚀研究进展"", 《表面技术》 * |
| 范世东等: "《轮机维护与修理》", 30 November 2012, 武汉大学出版社 * |
| 陈范才等: "《现代电镀技术》", 30 June 2009, 中国纺织出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107779805A (en) * | 2017-10-22 | 2018-03-09 | 陈海银 | Stabilizing roller surface abrasion resistance, corrosion-resistant finishes preparation method |
| CN109811294A (en) * | 2019-01-30 | 2019-05-28 | 扬州市职业大学(扬州市广播电视大学) | A method of enhancing turbine blade surface with supersonic flame spraying |
| CN110512164A (en) * | 2019-09-06 | 2019-11-29 | 武汉苏伯曼科技有限公司 | Improve the method and mineral fine powder steam dryer of the anti-wear abrasive capacity of thermally conductive coil pipe in mineral fine powder steam dryer |
| CN111530720A (en) * | 2020-04-26 | 2020-08-14 | 马鞍山钢铁股份有限公司 | Technology for processing return fan impeller of chain grate machine |
| CN115261768A (en) * | 2022-08-25 | 2022-11-01 | 甘肃伯骊江3D打印科技有限公司 | Supersonic spraying process for pump body |
| CN116162884A (en) * | 2023-03-09 | 2023-05-26 | 昆明理工大学 | Cavitation erosion resistant composite ceramic coating for water turbine and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106893961A (en) | A kind of supersonic flame spraying method for strengthening turbine blade surface | |
| Fauchais et al. | Thermal sprayed coatings used against corrosion and corrosive wear | |
| CN103834893B (en) | A kind of electric spark deposition strengthens the method for metal hydroturbine runner blade surface in conjunction with plasma cladding | |
| CN103538314B (en) | A kind of novel high impact toughness amorphous base composite coating and preparation method thereof | |
| CN102154609A (en) | Preparation method of high-precision roller wear-resistant coating | |
| CN103805992B (en) | A kind of method that strengthens metal hydroturbine runner blade surface with electric spark deposition in conjunction with laser melting coating | |
| CN102115884B (en) | Preparation method of wear-resistant and corrosion-resistant composite coating | |
| CN108866470A (en) | A kind of preparation method of air plasma spraying alloy-ceramic laminar coating | |
| CN109811294A (en) | A method of enhancing turbine blade surface with supersonic flame spraying | |
| Goyal et al. | An overview of slurry erosion control by the application of high velocity oxy fuel sprayed coatings | |
| CN105861974A (en) | Composite coating with impact erosion and cavitation erosion abrasion resistances | |
| CN105648296A (en) | Re-contained high-temperature-resisting wolfram-carbide-based metal ceramic composite powder and coating and preparing technology of coating | |
| CN107236331A (en) | High-temperature corrosion resistance coating and preparation method thereof and high-temperature corrosion resistance coating and preparation method thereof | |
| CN103088280A (en) | Cored wire for preparing iron-based coating as well as preparation method and application thereof | |
| CN107201491A (en) | A kind of preparation method of drilling riser sleeve pipe electric arc spraying protective coating | |
| CN107299310A (en) | A kind of preparation method for strengthening water pump vane Ceramic Coating Prepared By Plasma Spraying On The Surface | |
| CN104711506A (en) | Spraying method of high-thickness high-performance coating | |
| CN101691647B (en) | Hot-spraying coating with high performance | |
| Satapathy | Thermal Spray Coating of Redmud on Metals | |
| Majumdar | Thermal and cold spraying technology in manufacturing | |
| CN104099608B (en) | The method of Cu-Ag-Zn abradable seal coating is prepared in a kind of cold spraying | |
| CN102286718A (en) | Method for improving bond strength of thermal spraying coating layer and metal substrate | |
| CN106399894A (en) | Preparation method of WC-NiCrBSi gradient composite wear-resisting coating | |
| CN110699627A (en) | Corrosion-resistant electric arc spraying powder core wire material and coating preparation method | |
| CN106350760A (en) | Preparation method of gradient composite abrasion-resistant coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170627 |
|
| RJ01 | Rejection of invention patent application after publication |